From each colored square and white square I get this
Stacks of sewn squares
Stacks of squares cut to triangles
Four pile, four colors
This is a total of 320 triangles, all of which need to be pressed open (fun times!) So I know that it will take a few hours, but then I look at my one pinwheel that I completed, and it seems more do-able
Before you think I'm totally crazy, I don't go through all of the steps one at a time...I create a mini assembly line To save time, I laid out the white squares, and topped them with the red squares, face down
stacks of squares, 320 squares total (only took 2 hours!)
Mark a line down the centre of the wrong side of each colored square, diagonally. Sew each color square to a white square with the right sides together, using the line to make 2 lines, each with a 1/4 inch seam allowance
Cut down the centre of each square
Press open, towards the colored triangle
Result: one-quarter of a pinwheel. Now, I just have to do this 160 more times!
Note: time to sew, cut, and press four colors: 8 hours!